Home / 814,385.76-1,123,462.62-487,475.70

Finding the Fourth Proportional to 814,385.76, 1,123,462.62 and 487,475.70

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Solution

The fourth proportional to 814,385.76, 1,123,462.62 and 487,475.70 is: 672,483.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,385.76 : 1,123,462.62 = 487,475.70 : x
  2. Step 2: Convert to fraction form
    814,385.76/1,123,462.62 = 487,475.70/x
  3. Step 3: Cross multiply
    814,385.76x = 1,123,462.62 × 487,475.70
  4. Step 4: Simplify right side
    814,385.76x = 547,660,727,108.33
  5. Step 5: Solve for x
    x = 547,660,727,108.33/814,385.76
  6. Step 6: Final answer
    x = 672,483.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.